CN110615939A - Preparation method of anti-fogging breathable film - Google Patents

Preparation method of anti-fogging breathable film Download PDF

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Publication number
CN110615939A
CN110615939A CN201810631998.3A CN201810631998A CN110615939A CN 110615939 A CN110615939 A CN 110615939A CN 201810631998 A CN201810631998 A CN 201810631998A CN 110615939 A CN110615939 A CN 110615939A
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China
Prior art keywords
parts
mixture
breathable film
mixing
fogging
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Withdrawn
Application number
CN201810631998.3A
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Chinese (zh)
Inventor
李铜玲
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Huaian Tianxin Mstar Technology Ltd
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Huaian Tianxin Mstar Technology Ltd
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Priority to CN201810631998.3A priority Critical patent/CN110615939A/en
Publication of CN110615939A publication Critical patent/CN110615939A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2401/08—Cellulose derivatives
    • C08J2401/26—Cellulose ethers
    • C08J2401/28—Alkyl ethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2427/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
    • C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds

Abstract

The invention discloses a preparation method of an anti-fogging breathable film, which comprises the steps of mixing PP, hydroxypropyl methylcellulose, dibutyl phthalate and PVC in mixing equipment to obtain a first mixture; then putting the first mixture into a reaction kettle, heating under a vacuum condition, adding a coupling agent, stirring, cooling, adding phenyl phosphite, and continuously stirring to obtain a second mixture; then adding an ultraviolet absorbent and barium stearate into the mixture II, mixing, and then extruding and granulating in a double-screw extruder; and finally, blowing the extruded and granulated material through a film blowing machine to obtain the anti-atomization breathable film. The film obtained by the method provided by the invention has good mechanical property, anti-fogging property and air permeability.

Description

Preparation method of anti-fogging breathable film
Technical Field
The invention belongs to the technical field of chemical membrane material preparation, and particularly relates to a preparation method of an anti-fogging breathable film.
Background
Polypropylene (PP) is a thermoplastic resin prepared by polymerizing propylene. The polypropylene is a non-toxic, odorless and tasteless milky-white high-crystalline polymer with the density of only 0.90-0.91g/cm3Is one of the lightest varieties of all plastics at present. It is particularly stable to water, has a water absorption of only 0.01% in water and a molecular weight of about 8-15 ten thousand. But the formability is good, but because the shrinkage rate is large (1% -2.5%), thick-wall products are easy to dent, the requirements on parts with higher dimensional precision are difficult to meet, and the surface gloss of the products is good. The chemical stability of the polypropylene is very good,besides being corroded by concentrated sulfuric acid and concentrated nitric acid, the polypropylene composite material is stable to other various chemical reagents, but low molecular weight aliphatic hydrocarbon, aromatic hydrocarbon, chlorinated hydrocarbon and the like can soften and swell the polypropylene, and the chemical stability of the polypropylene composite material is improved along with the increase of crystallinity, so that the polypropylene composite material is suitable for manufacturing various chemical pipelines and fittings and has a good corrosion prevention effect. The PP has good performance, so the PP is widely applied to the chemical field, especially to a film material, and the PP is widely applied to the electrochemical field, the packaging field and the agricultural field such as a plastic greenhouse due to good self insulation. For the film material mainly comprising PP, the application of the film material is limited due to the performance defects such as atomization and the like caused by temperature difference in the using process because the permeability of the film material is poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a preparation method of an anti-fogging breathable film, which improves the anti-fogging and breathable performances of the film while ensuring good mechanical performance.
The technical scheme of the invention is as follows:
a preparation method of an anti-fogging breathable film comprises the following preparation steps:
mixing PP20-30 parts, hydroxypropyl methylcellulose 2-5 parts, dibutyl phthalate 1-3 parts and PVC5-8 parts in parts by weight in a mixing device to obtain a first mixture;
step two, putting the mixture I into a reaction kettle, heating to 80-90 ℃ under a vacuum condition, adding 1-2 parts of coupling agent, stirring for 20-30 minutes, then cooling to 70-80 ℃, adding 1-2 parts of phenyl phosphite, and continuously stirring for 20-30 minutes to obtain a mixture II;
adding 0.8-1.5 parts of ultraviolet absorbent and 1-3 parts of barium stearate into the mixture II, mixing, and then extruding and granulating in a double-screw extruder;
and step four, blowing the extruded and granulated material through a film blowing machine to obtain the anti-atomization breathable film.
Further, the preparation method of the anti-fogging breathable film comprises the step one, wherein the mixing temperature is 40-50 ℃, and the mixing time is 20-30 minutes.
Further, in the preparation method of the anti-fogging breathable film, in the second step, the coupling agent is a silane coupling agent KH 550.
Further, in the preparation method of the anti-fogging breathable film, the vacuum degree under the vacuum condition in the second step is 0.02-0.04 MPa.
Further, in the preparation method of the anti-fogging breathable film, the ultraviolet absorbent in the third step is UV-531.
Further, the preparation method of the anti-fogging breathable film comprises the third step of extruding at the temperature of 180-190 ℃.
The anti-fogging breathable film provided by the invention has good mechanical strength and good anti-fogging and breathable performances, wherein the tensile strength reaches more than 15MPa, the elongation at break reaches more than 355%, the anti-fogging performance reaches the first level, and the breathable performance reaches 2600 WVTR/g/m224h or more.
The specific implementation mode is as follows:
example 1
A preparation method of an anti-fogging breathable film comprises the following preparation steps:
step one, mixing PP20 parts, hydroxypropyl methylcellulose 2 parts, dibutyl phthalate 1 part and PVC5 parts in parts by weight in a mixing device at 40 ℃ for 20 minutes to obtain a mixture I;
step two, putting the mixture I into a reaction kettle, heating to 80 ℃ under the vacuum condition of 0.02MPa of vacuum degree, adding KH 5501 parts of silane coupling agent, stirring for 20 minutes, then cooling to 70 ℃, adding 1 part of phenyl phosphite, and continuously stirring for 20 minutes to obtain a mixture II;
step three, adding UV-5310.8 parts of ultraviolet absorbent and 1 part of barium stearate into the mixture II, mixing, and then extruding and granulating in a double-screw extruder at the extrusion temperature of 180-;
and step four, blowing the extruded and granulated material through a film blowing machine to obtain the anti-atomization breathable film.
Example 2
A preparation method of an anti-fogging breathable film comprises the following preparation steps:
step one, mixing PP23 parts, hydroxypropyl methylcellulose 3 parts, dibutyl phthalate 2 parts and PVC6 parts in parts by weight in a mixing device at 45 ℃ for 23 minutes to obtain a mixture I;
step two, putting the mixture I into a reaction kettle, heating to 85 ℃ under the vacuum condition of 0.03MPa of vacuum degree, adding KH 5501 parts of silane coupling agent, stirring for 25 minutes, then cooling to 76 ℃, adding 1 part of phenyl phosphite, and continuously stirring for 26 minutes to obtain a mixture II;
step three, adding UV-5311 parts of ultraviolet absorbent and 2 parts of barium stearate into the mixture II, mixing, and then extruding and granulating in a double-screw extruder at the extrusion temperature of 180-;
and step four, blowing the extruded and granulated material through a film blowing machine to obtain the anti-atomization breathable film.
Example 3
A preparation method of an anti-fogging breathable film comprises the following preparation steps:
step one, mixing 26 parts of PP, 4 parts of hydroxypropyl methylcellulose, 2 parts of dibutyl phthalate and 7 parts of PVC in parts by weight in a mixing device at 47 ℃ for 25 minutes to obtain a mixture I;
step two, putting the mixture I into a reaction kettle, heating to 88 ℃ under the vacuum condition of 0.03MPa of vacuum degree, adding KH 5502 parts of silane coupling agent, stirring for 26 minutes, then cooling to 75 ℃, adding 2 parts of phenyl phosphite, and continuously stirring for 28 minutes to obtain a mixture II;
step three, adding UV-5311.2 parts of ultraviolet absorbent and 2 parts of barium stearate into the mixture II, mixing, and then extruding and granulating in a double-screw extruder at the extrusion temperature of 180-;
and step four, blowing the extruded and granulated material through a film blowing machine to obtain the anti-atomization breathable film.
Example 4
A preparation method of an anti-fogging breathable film comprises the following preparation steps:
step one, mixing PP28 parts, hydroxypropyl methylcellulose 4 parts, dibutyl phthalate 3 parts and PVC8 parts in parts by weight in a mixing device at the temperature of 48 ℃ for 27 minutes to obtain a mixture I;
step two, putting the mixture I into a reaction kettle, heating to 87 ℃ under the vacuum condition of 0.02MPa of vacuum degree, adding KH 5502 parts of silane coupling agent, stirring for 28 minutes, cooling to 79 ℃, adding 2 parts of phenyl phosphite, and continuously stirring for 25 minutes to obtain a mixture II;
step three, adding UV-5311.3 parts of ultraviolet absorbent and 2 parts of barium stearate into the mixture II, mixing, and then extruding and granulating in a double-screw extruder at the extrusion temperature of 180-;
and step four, blowing the extruded and granulated material through a film blowing machine to obtain the anti-atomization breathable film.
Example 5
A preparation method of an anti-fogging breathable film comprises the following preparation steps:
step one, mixing PP30 parts, hydroxypropyl methylcellulose 5 parts, dibutyl phthalate 3 parts and PVC8 parts in parts by weight in a mixing device at 50 ℃ for 30 minutes to obtain a mixture I;
step two, putting the mixture I into a reaction kettle, heating to 90 ℃ under the vacuum condition of 0.04MPa of vacuum degree, adding KH 5502 parts of silane coupling agent, stirring for 30 minutes, then cooling to 80 ℃, adding 2 parts of phenyl phosphite, and continuously stirring for 30 minutes to obtain a mixture II;
step three, adding UV-5311.5 parts of ultraviolet absorbent and 3 parts of barium stearate into the mixture II, mixing, and then extruding and granulating in a double-screw extruder at the extrusion temperature of 180-;
and step four, blowing the extruded and granulated material through a film blowing machine to obtain the anti-atomization breathable film.
The performance test of the anti-fogging breathable film prepared in the above example is carried out, and the results are as follows:
from the results, the anti-fogging breathable film provided by the invention has good mechanical strength and good anti-fogging and air permeability, wherein the tensile strength reaches more than 15MPa, the elongation at break reaches more than 355%, the anti-fogging performance reaches the first level, and the air permeability reaches 2600 WVTR/g/m224h or more.

Claims (6)

1. The preparation method of the anti-fogging breathable film is characterized by comprising the following preparation steps:
mixing PP20-30 parts, hydroxypropyl methylcellulose 2-5 parts, dibutyl phthalate 1-3 parts and PVC5-8 parts in parts by weight in a mixing device to obtain a first mixture;
step two, putting the mixture I into a reaction kettle, heating to 80-90 ℃ under a vacuum condition, adding 1-2 parts of coupling agent, stirring for 20-30 minutes, then cooling to 70-80 ℃, adding 1-2 parts of phenyl phosphite, and continuously stirring for 20-30 minutes to obtain a mixture II;
adding 0.8-1.5 parts of ultraviolet absorbent and 1-3 parts of barium stearate into the mixture II, mixing, and then extruding and granulating in a double-screw extruder;
and step four, blowing the extruded and granulated material through a film blowing machine to obtain the anti-atomization breathable film.
2. The method for preparing an antifogging breathable film according to claim 1, wherein the temperature of the mixing in the first step is 40 to 50 ℃ and the mixing time is 20 to 30 minutes.
3. The method for preparing the anti-fogging breathable film according to claim 1, wherein the coupling agent in the second step is a silane coupling agent KH 550.
4. The method for preparing an antifogging breathable film according to claim 1, wherein the vacuum degree under vacuum in step two is 0.02 to 0.04 MPa.
5. The method for preparing an antifogging breathable film according to claim 1, wherein the UV absorber in step three is UV-531.
6. The method for preparing an antifogging breathable film according to claim 1, wherein the extrusion temperature in step three is 180-190 ℃.
CN201810631998.3A 2018-06-20 2018-06-20 Preparation method of anti-fogging breathable film Withdrawn CN110615939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810631998.3A CN110615939A (en) 2018-06-20 2018-06-20 Preparation method of anti-fogging breathable film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810631998.3A CN110615939A (en) 2018-06-20 2018-06-20 Preparation method of anti-fogging breathable film

Publications (1)

Publication Number Publication Date
CN110615939A true CN110615939A (en) 2019-12-27

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Application publication date: 20191227

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